ASTROSAT CZTI

Data Quality Report

Orbit 13465

Creation date: 2024-06-27T16:41:13.702174
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_103T01_9000001988_13465cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13465cztM0_level2_quad_clean.evt
Size (bytes)508,484,160105,436,800
Size484.9 MB 100.6 MB
Events in quadrant A3,675,869669,803
Events in quadrant B4,169,385677,793
Events in quadrant C3,596,349666,195
Events in quadrant D3,427,183636,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163683
B0176852
C0161302
D0160902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7811640.819357%
B78112633.367046%
C7811220.281654%
D7811110.140827%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8772 7814 1 1 0.01% 0.01%
B 8772 7813 157 157 1.79% 2.01%
C 8772 7814 1 1 0.01% 0.01%
D 8772 7814 2 2 0.02% 0.03%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 83332 432.59 930 907 190.5
A 1 162 9457 44.87 930 907 190.5
A 0 226 8305 38.82 930 907 190.5
B 3 64 436841 2435.84 933 908 179.0
B 0 85 29298 158.63 933 908 179.0
B 4 80 24071 129.43 933 908 179.0
C 3 233 45681 212.74 907 909 210.5
C 14 220 13091 57.88 907 909 210.5
C 13 61 6593 27.01 907 909 210.5
D 2 234 27092 122.7 893 868 213.7
D 9 85 13219 57.79 893 868 213.7
D 12 110 13178 57.6 893 868 213.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter